Document Details

Document Type : Article In Journal 
Document Title :
Comparison study for passivation of stainless steel by coating with polyaniline from two different acids
Comparison study for passivation of stainless steel by coating with polyaniline from two different acids
 
Subject : Chemistry 
Document Language : English 
Abstract : In this paper we discuss electrodeposited polyaniline (PANI) films on stainless steel surfaces made from two different acidic (sulphuric and phosphoric) solutions containing the aniline monomer. The type of counter anion was shown to significantly affect the polymerisation reaction and the formation of an underlying oxide layer. We find that the growth rate and thickness of the PANISO4 layer are much higher than those of PANIPO4 layer. Both layers altered the steel potential and passivated the materials when immersed in a hot acid solution. While the oxide underneath the PANISO 4 layer is enriched with Cr, Fe and Ni components the under PANIPO4 layer is elementally deficient, making the later a less efficient passivating agent. Finally, we show that the first oxide film is superior in protection against pitting in aggressive chloride solutions. 
ISSN : 0300-9440 
Journal Name : Progress in Organic Coatings 
Volume : 72 
Issue Number : 3 
Publishing Year : 1432 AH
2011 AD 
Article Type : Article 
Added Date : Sunday, March 18, 2012 

Researchers

Researcher Name (Arabic)Researcher Name (English)Researcher TypeDr GradeEmail
عائشة علي قنشGanash, ِAisha AliResearcherDoctorateaganash@kau.edu.sa
فوزية محمد النويصرAl-Nowaiser, Fawziya MResearcherDoctoratefalnowaiser@kau.edu.sa
شعيل أحمد الثبيتيAL-Thabaitia, Shaeel AhmedResearcherDoctoratesthabiti@hotmail.com
أبو الحجاج هرماسHermas, Abou-Elhagag ResearcherDoctoratehagag@yahoo.com

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